of natick



E. G. BAUM. I

BOTTLE CAP.

APPLICATION FILED lUNE 20. I922.

- Reissued Nov. 21, 1922.

manna-2i, 1922.

ori am m 1 ,a57,aai, dated To all'ivhom it mwy-concern:

Be it known that I, EWALD Gnoncn BAUM,

\ a citizen of the United States, and a 'resi-- dent of Natick, in the county'of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Bottle Caps, of: which the following is a specification.

This invention relates to'bottle caps and particularly refers to an improvement in a ea}; or closure for milk bottles. 3 v

he invention contemplates the production of a thorough sanitary leak-proof closure I applicable to an standard milk bottle to reduce the possibilityof'contamination of the v contents to a minimum.

In creating this closure particular atten- .-tion has been paid to the formation of the mouth of standard milk bottles in order that the cap will function properlytherewith of modifying in any.

caps now in use resides in the fact'that many consumers are prone to remove the cap by pressing it inward, thereby permitting ust,

' dirt, or other filth to commingle with. the

contents. The construction of theycap ac- 85 cording to this invention not only obviates but positively prevents the opening of the bottle by this method. v

A further feature of the inventionirelates [to the construction b which a partial vac- 40 -uum may be formed be not insures expulsion of .air beneath the capbut aids in holding-it in position and maintains a firm sealing engagement between 46 it and the bottle.

."Another important characteristic of the cap is that whenbeing removed after once I bein sealed the sealing faces are so distorted reuse.

With the above recited and other objects in view some of which will be apparent from reissue filed June 20, 1922. Serial No. 589,723.

of reference which denote throughoutthe several views, A designates tween the lower faceof the cap and the.bottle contents, which} v I bore-covering portion 10 and the pouring hp estroyed' as toleifectually prevent its Re 15,491 I UNITED S A ES PAT T OF -.4

KWALD GEORGE 'BAUM, .OF NATICK, MASSACHUSETTS, ASSIGNOB TO BAUM DAIRY APPLIANCE COMPANY, OF NATICK,

MASSACHUSETTS, A CORPORATION.

IQOTTLE GAP.

' -the following detailed description reference may be had "to the accompariying drawings in which Figure 1 is a vertical sectional view through the improved cap illustrating its application to a standardmilk bottle.

Figure 2 is a plan view thereof.

Figure 3 is a fragr'nentary diagrammatic view illustrating the condition of the cap when it is applied to the bottle.

November 2, 1920, Serial No. 388,182, filed June 11 1920. Application for Figure 4 is a similar view illustrating the 7 ea in sealed position. eferring to the drawings-11R; characters the neck of atstandard milk bottle having the usual enlargzed external bead B forming a pouring lip The'bore'of the neck is formed with a.horizontalshoulder or ledge C constituting the seat for the usual form of cap, and the portion-D of the bore lying its lower end for a short distance below'the shoulder. The foregoing is a detailed description of the construction of the neck of a standard milk bottle and. forms :no part of thelpresent invention. i

The cap constituting the invention and designed as a closure for the-bottle of the fore oing outlined construction is preferab elements between the shoulder C and the pouring lip constructed of compressed paper,

pastehoard, or other'suitable material, .con-

taining the necessa qu'alitiesto perfor the functions for wli ieh it is intended. Ti l: cap'is pressed, molded, cast, or otherwise formed of a; piece of material to providea housing port on 11, the juncture of said portions being horizontall stepped to rto providethehorizontal an substantially verticalannular sealing faces 12, .13, and 1-1 adapted for sealing enga ment with the the diameter .of the external bead B. The

' f pouring lip housing 11 is therefore made to accommodate the maximum size of pouringlip E and bead B, and the material thereof is preferably formed with substantially radial integralcorrugations or stiffening ribs extendingover the top of the bottle pouring 'lip and terminating at opposite ends within the margin of the cap and above thevsealing face 13. This construction causes the pouring lip housingto be resilient so that the marginal portion of the capand the sealing face 13 may spring against the outer and inner faces, respectively, of the pouring lip below its largest diameter while elsewhere the housing may be out of contact with the lip;

f-The ca is therefore e ually applicable to bottles aving considera le variation in the cross sectional contour of the pouring lip,

the cap engagin and sealing against it along.

i utility of which will later ap ear.

When the cap is applied to t e bottle, the central disk portion is positioned u wardl'y above the plane of the margin of t e borecovering portion 10 ad'acent the sealing por- 1 5 tion 14, as shown in V ing face 12 is seated on the shoulder C. This igure 3 and the sealdisk portion is' then pressed downwardly below this lane to force out air from between the ower face of the cap and the upper surfaceof the milk, which is sub- 'stantially at the level of the lowerface 14 t to ex I sure is removed the elasticit covering portion' causes the rise somewhat from its lowest position, thus I0 and the sealing faces 13 and 14 are resse' tightly into sealin mating portions 0 the fportion of the cap takes place as the dis rst approaches and thenpasses below the.

plane of its margin, and the cap also'flexes along these lines.

If considerable pressure has been applied downwardly on the central disk portion 40 l the air therebeneath, after the presof the boreisk portion to creating a partial vacuum between the lower face of the cap and the surface of the milk, causing the ca to'maintain sealing engagement with the ttle and to hold thereto with great tenacity. 1

When the cap'is removed from the bottle,

pouring lip, its-sealing faces become so distorted o ldestroyed as to render it unfit for subsequent use as a sealing cap,,which insures that only fresh sanitary caps may be 'used each time the bottles are filled and ca ed.- a

hile there has been illustrated and described a single and preferred embodiment of the invention, no limitation is necessarily made to-the precise structural details shown, as changes and modifications falling within the scope of the appended claims may be resorted to when desired without departing from the spirit or scope of this invention.

Having thus described my invention I claim as new and desire to secure by Letters Patent:

1. A bottle cap, including a bore-covering portion, and a pouring lip housing, the juncture therebetween being stepped to constitute-a horizontal sealing face and upper and lower sealin faces adapted to respectively engage and coact with the horizontal seat and inclined bores of a milk bottle above and below said seat. 7

2. The combination with a milk bottle provided with an external head, a ouring lip, an internal horizontal seat, and, ownward y and outwardly flared walls above and be low said seat, of a cap including a central bore-covering portion and an annular pouring lip housing formed about said bore-covering portion, the juncture of said portion and hou'sin being stepped to provide a hor-. izontal sea 1n face adapted to engage and coact with sai seat, and super osed substantially vertical sealing faces a apted to coact respectively with-said flared walls.

3. The combination a with a milk bottle i and belowsaid seat, of a, cap including a en agement with the ottle. The corru v gations 16 and 18 yield, by becoming. more or less curved, as the alternate shrinking and expanding of the area of the bore-coverin bore-covering portion and an annular pouring lip houslng formed about said bore-cover1n portion, the juncture of said portion and ou'sin being stepped to provide a horizontal sea mg face adapted to engage and coact with said seat and superposed substan- 7 tially vertical sealing faces adapted to (50- act respectively with said flared walls, said bore-covered portion being scored whereby it may be flexed relative to the plane of margin. I I

4. The combination with a bottle rovided with a neck formedwith a central ore having a horizontal seat, frustoconical vertlcaljwalls immediately adjacent to; said seat,

one of said walls terminating in a pearl substantially vertical sealing faces and a horizontal sealing face connecting said vertical sealing faces.

5. The combination with a bottle provided with a neck formed with a central bore having a horizontal seat, frustoconical vertical walls immediately adjacent thereto,

. one of which walls terminates in a pouring central bore-closing portion, and a marginal pouring lip-embracing portion having corru- 4 ga-tions extending over said pouring lip.

7. A cap for a bottle having a bore terminating in a pouring lip, which-comprises a' central bore-closing portion, and a marginal pouring lip-embracing portion provided with integral stiffening elements spacing said portion from the top of the lip.

8. A cap for a bottle having a bore terminating in a pouring lip, which comprisesa central bore-closing portion, and a lip-embracing portion having substantially radial stiifening corrugations.

9. A cap for a bottle having a bore terminating in .a pouring lip, which comprises a central bore-closing portion, and a lip-em- 1 bracing portion havin substantially radial stiffening ribs terminatmgwithin the margin of said cap.

10. A cap for a bottle having a bore terminating in a pouring lip, which comprises a central bore-closing portion, and a lip-embracing portion having substantially radial stiffening corrugations positioned over the top of said lip.

11. A cap for a bottle having a bore terminating in a pouring lip, which comprises a. central bore-covering portion, and a lip-embracing portion surrounding said. bore-covering portion and having substantially radial stifiening' corrugations positioned over the top of said lip and terminating within the inner and outer margins of said lip-embracing portion. 7

12. A cap for a bottle having a bore provided with a horizontal seat, which comprises an annular portion for engagement with said seat, and a bore-covering portion depressed below said seat, said bore-covering portion having an annular corrugation therein.

13. A cap for a bottle having a bore provided with a horizontal seat, which comprises an annular por ion for engagement with said seat, and a re-covering portion depressed below said seat and having a central disk portion defined by an annular corrugation and radial corrugations extending outwardly therefrom.

14. A cap for a bottle having a bore provided with a substantially horizontal seat and a substantially vertical wall below said seat, which comprlses an annular portion for engagement with said seat.-and a bore-covering portion depressed below said seat, said bore-cover1ng portion being expansible to permit 1ts margin to be brought into seallng engagement with said vertical wall.

In testimony whereofl have affixed my signature.

EWALD GEORGE BAUM. 

